CODEWITHSUNDEEP
javahibernatejoin
user2468946
user2468946

Reputation: 31

How to specify join type in hibernate entity

I want to specify join type on two hibernate entities

`
@Entity
@Table(name = "b_template_control")
public class TemplateControl {
    @Column(name = "id")
    private Long id;

    @JsonInclude(JsonInclude.Include.NON_EMPTY)
    @ManyToOne(fetch = FetchType.EAGER, cascade = CascadeType.DETACH)
    @JoinColumn(name = "back_validation_id", nullable = false, insertable 
    = false, updatable = false)
    private ValidationRuleBack validationRuleBack;
}
`

as you can see we have @ManyToOne relation, by default hibernate creates INNER JOIN query but I need LEFT JOIN. The question is how could I specify join type using annotations.

Answer It is nullable = false, so how would a left join be different from an inner join?

Upvotes: 2

Views: 3382

Answers (1)

akshaya pandey
akshaya pandey

Reputation: 997

Please refer the following link.

https://docs.jboss.org/hibernate/core/3.3/api/org/hibernate/FetchMode.html

The join type FetchMode implies, the query will be using an outer join

Upvotes: 3

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